8413.30.90 - Other

This HTS category, 8413.30.90, encompasses "Other" pumps specifically designed for use as fuel, lubricating, or cooling medium pumps for internal combustion piston engines. These pumps are distinct from the explicitly defined fuel-injection pumps for compression-ignition engines found under 8413.30.10. This subheading acts as a residual category for pumps within this engine component group that do not fit the more specific sibling classification, typically by design, function, or application.

The primary function of pumps classified here is to ensure the efficient operation of internal combustion engines by managing essential fluids. This includes pumps that deliver fuel to the combustion chamber (excluding the specialized fuel-injection types), circulate lubricating oil to reduce friction and wear, and transfer coolant to regulate engine temperature. The key differentiating factor from the sibling category lies in the absence of the specific "fuel-injection" designation for compression-ignition engines.

Within this "Other" classification, further distinctions are made to categorize the specific fluid being pumped. The subcategories delineate these functions: 8413.30.90.30 specifically covers fuel pumps for internal combustion piston engines, 8413.30.90.60 is designated for lubricating pumps, and 8413.30.90.90 serves as a final residual category for any remaining pumps within this engine component scope not falling into the fuel or lubricating pump subheadings, such as certain cooling medium pumps.